Rhodium Nanoparticles Stabilized by Ionic Copolymers in Ionic Liquids:  Long Lifetime Nanocluster Catalysts for Benzene Hydrogenation

Mu, Xindong; Meng, Jianqiang; Li, Zi‐Chen; Kou, Yuan

doi:10.1021/ja051803v

Cited by 289 publications

(154 citation statements)

References 19 publications

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“…Rhodium nanoparticles stabilized by the ionic copolymer showed high lifetime and activity in arene hydrogenation reactions. [59] Stable alkenes hydrogenation catalysts based on Pt 0 , Pd 0 , and Rh 0 nanoparticles stabilized by poly(N-vinyl-2-pyrrolidone) (PVP) have been also prepared by simple ethanolic reduction of the corresponding metal halide salts immobilized in BMI·PF 6 . [55] Other extra stabilizing agents, such as carbon, montmorillonite (MMT) or mesoporous SBA-15, have been used to improve the stability of MNPs in ionic liquids.…”

Section: Catalytic Reactionsmentioning

confidence: 99%

Catalytic Applications of Metal Nanoparticles in Imidazolium Ionic Liquids

Migowski

Dupont

2006

Chemistry A European J

432

241

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Metal nanoparticles (MNPs) with a small diameter and narrow size distribution can be prepared by H2 reduction of metal compounds or decomposition of organometallic species dissolved in ionic liquids (ILs). MNPs dispersed in ILs are catalysts for reactions under multiphase conditions. These soluble MNPs possess a pronounced surfacelike rather than single‐site like catalytic properties. In other cases the MNPs are not stable and tend to aggregate or serve as reservoirs of mononuclear catalytically active species.

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Section: Catalytic Reactionsmentioning

confidence: 99%

Catalytic Applications of Metal Nanoparticles in Imidazolium Ionic Liquids

Migowski

Dupont

2006

Chemistry A European J

432

241

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“…As an alternative to aqueous or organic solvents, ILs are thought to hold much promise for green chemistry applications. As a new solvent system, ILs are being investigated in a variety of applications such as polymer synthesis [1][2][3], catalytic processes [4,5], electrochemical reactions [6], liquid-liquid extractions [7], and as a vacuum compatible matrix for matrix-assisted laser desorption/ionization [8 -13].…”

mentioning

confidence: 99%

Electrochemically-Induced Reactions of Hexafluorophosphate Anions with Water in Negative Ion Electrospray Mass Spectrometry of Undiluted Ionic Liquids

King

Duckworth

2006

J. Am. Soc. Mass Spectrom.

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The influence of water on the observed gas-phase population of negative ions in electrospray mass spectrometry was studied for the undiluted ionic liquid 1,3-butyl-methyl-imidazolium hexafluorophosphate (BMIM ϩ PF 6 Ϫ ). During the electrospray process, electrolytic reduction of water enhances the production of tetrafluorophosphate (F 4 PO Ϫ ), which undergoes further reactions to produce difluorophosphate (F 2 PO 2 Ϫ ) anions. These anions are observed in addition to the pre-existing hexafluorophosphate anion. The apparent substitution of two fluorine atoms with one oxygen is attributed to a series of reactions initiated by hydrolysis of hexafluorophosphate. This hydrolysis reaction was enhanced by the addition of hydroxide, formed via the hydrolysis of water or through the addition of ammonium hydroxide. The formation of F x PO y Ϫ was studied as a function of the electrospray current and solution flow rate. The mass spectral response shows a quantitative logarithmic relationship between ⌺F x PO y Ϫ signal intensities (adjusted for mole equivalents of H 2 O required) and the amount of water present, against which the water content could be rapidly assessed. Results were found to be comparable to Karl Fischer titration data. (J Am Soc Mass Spectrom 2006, 17, 939 -944)

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“…The functionality of ILs is tunable by adjusting molecular structures of the organic asymmetric cations (e.g., imidazolium, pyridinium, and tetraalkylammonium) and anions (e.g., halide, tetrafluoroborate, hexafluorophosphate, triflate, amidotriflate, dicyanamide) [12][13][14][15]. Recently, the researchers have focused on poly(ionic liquid)s (PILs) from the polymerization of IL monomers [16].…”

Section: Open Accessmentioning

confidence: 99%

Hydrophobic Poly(ionic liquid) for Highly Effective Separation of Methyl Blue and Chromium Ions from Water

Jiang

Kong

2013

Polymers

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Abstract:The hydrophobic poly(ionic liquid) of poly(3-ethyl-1-vinylimidazolium bis(trifluoromethanesulfonyl)imide) (PVI-TFSI) containing imidazolium cations and bis(trifluoromethanesulfonyl)imide anions was synthesized for the separation of methyl blue and chromium ions [Cr(VI)] from water. The adsorption of methyl blue and Cr(VI) in PVI-TSFI/water system reached equilibrium stage within 60 min and 12 h, and the maximum adsorbed percentage for methyl blue and Cr(VI) was 97.6% and 98.0%, respectively. The adsorption regi me of either methyl blue or Cr(VI) for PVI-TFSI was in correspondence with the Langmuir adsorption model. The maximum adsorption capacity of PVI-TFSI for methyl blue and Cr(VI) was determined as 476.2 and 17.9 mg/g, respectively. The hydrophobic poly(ionic liquid) with a remarkable adsorbent capacity of methyl blue and Cr(VI) can be conveniently synthesized and shows potential in water treatment for the effective separation of organic dyes or heavy metal ions.

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Rhodium Nanoparticles Stabilized by Ionic Copolymers in Ionic Liquids: Long Lifetime Nanocluster Catalysts for Benzene Hydrogenation

Cited by 289 publications

References 19 publications

Catalytic Applications of Metal Nanoparticles in Imidazolium Ionic Liquids

Catalytic Applications of Metal Nanoparticles in Imidazolium Ionic Liquids

Electrochemically-Induced Reactions of Hexafluorophosphate Anions with Water in Negative Ion Electrospray Mass Spectrometry of Undiluted Ionic Liquids

Hydrophobic Poly(ionic liquid) for Highly Effective Separation of Methyl Blue and Chromium Ions from Water

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